IMPORTANT TOPICS for Class XII Chemistry Board Exam: p, d and f Block elements

Meritnation|Mar 10th, 2012 03:24pm

p-Block Elements

Structures of Oxoacids: phosphorus (2007), sulphur (2007),

Structures of Fluoride: sulphur (2008), xenon (2008, 2009), bromine (2009)

Interhalogen compounds (2007)

Basicity of group 15 elements (2008, 2009)

Most important topics/questions

  1. Structures of PCl5, H2SO3, H2SO4, H2S2O8, H2S2O7, HOCl, HClO2, HClO3, HClO4
  2. Complete the following reaction:
    • P4 + NaOH + H2O →
    • P4 + SO2Cl2
    • POCl3 + H2O→
    • KMnO4 + HCl →
    • NaOH + Cl2
  3. Conceptual questions:
  • NF3 is an exothermic compound whereas NCl3 is not.
  • NH3 is a stronger base than PH3. Why?
  • Arrange the following in order of the indicated property:
    • F2, Cl2, Br2, I2 in increasing order of bond dissociation enthalpy
    • HF, HCl, HBr, HI in increasing order of acidic strength
    • NH3, PH3, AsH3, SbH3, BiH3 in increasing order of basic strength
  • What are interhalogen compounds?

Chapter 8: The d– and f– Block Elements (5 marks)

  • Variable oxidation states of transition elements (2007, 2008)
  • Formation of coloured ions by transition metal ions (2007, 2010)
  • Lanthanoid contraction (2007, 2008, 2009)
  • Oxidation states of actinoids (2009, 2011)

NCERT questions which have been asked previously

Page Question Number Year
211 Example 8.1 2010
220 Example 8.7 2010
220 Intext question 8.6 2010
232 Intext question 8.10 2009, 2008
234 Exercise-8.7 2007
8.11 (ii) 2008
8.11 (iii) 2007, 2010
8.11 (iv) 2008
8.21 (i) 2009

Add Comment Total Comments (36)

  • 1. Abhisumat Singh  |  January 25th, 2019 at 2:04 pm

    will tell whether it helped or not once i’m done with my exams

  • 2. Shalini sivakumar  |  February 5th, 2018 at 6:16 am

    Thank u so much meritnation. It is very useful for p block elements as it is very vast chapter.

  • 3. shanaya  |  December 16th, 2016 at 9:30 pm

    Its awesome for reference

  • 4. Mohan  |  December 4th, 2016 at 9:53 pm

    Awesome!! Really helpful

  • 5. Jaspreet  |  March 8th, 2016 at 8:29 pm

    i am much releaved now reading the above..thanx

  • 6. Meritnation  |  March 8th, 2016 at 9:57 am

    Hi Lara,

    Please view our blog on CBSE Class 12 Chemistry: Important Topics and Tips for Finals HERE. Hope this helps you.
    All the Best!

    Team Meritnation

  • 7. Lara  |  March 7th, 2016 at 5:21 pm

    Can I get a list of all reactions from p,d and f block….I need them urgently….

  • 8. rd  |  January 19th, 2016 at 7:35 pm

    thank u …..for helping

  • 9. kiran  |  January 12th, 2016 at 1:24 am

    Thank you very much

  • 10. anas  |  January 20th, 2015 at 10:24 am

    thank you very very much…….

  • 11. Eric D'souza  |  November 25th, 2014 at 2:53 am

    Thanks a lot !!

  • 12. Narender Modi  |  March 10th, 2014 at 6:29 pm

    Thank you very much……………….

  • 13. jazz  |  December 10th, 2013 at 11:14 pm

    its really help

  • 14. tarun  |  August 10th, 2013 at 1:49 pm

    Thankszz broo ……really help me to study ……once again thank u vry much

  • 15. mahita  |  June 4th, 2013 at 12:51 pm

    really it helped me a lot and thanks

  • 16. abhishek  |  March 10th, 2013 at 8:37 pm

    thnk u very mch 🙂

  • 17. Hari  |  March 10th, 2013 at 9:19 am

    thanxx!!!!

  • 18. content  |  March 10th, 2013 at 1:22 pm

    Please refer to http://blog.meritnation.com/ for updated posts.

  • 19. anshika  |  March 8th, 2013 at 9:00 pm

    plz update this…. is this all v have to study??

  • 20. Leeza  |  February 19th, 2013 at 10:48 pm

    Really it helped me alot it directed me the way i should focuss

  • 21. dhwani  |  February 17th, 2013 at 3:01 pm

    ver nice seriouslly …

  • 22. feba  |  February 1st, 2013 at 7:40 pm

    to the point.. very useful…..

  • 23. sager kaushik  |  January 9th, 2013 at 12:47 pm

    required some special for the exzm

  • 24. manyata  |  December 21st, 2012 at 12:38 pm

    can we get some more hints from other chapters too..??
    they will be helpul for me..

  • 25. Priya rohilla  |  November 27th, 2012 at 9:59 pm

    VEry gud and useful qu.

  • 26. parthiban  |  November 17th, 2012 at 7:29 pm

    subject

  • 27. Devyadav  |  November 3rd, 2012 at 7:19 pm

    Thanks for the compliment . . . .. . . .. . .

  • 28. aradhana  |  October 29th, 2012 at 11:57 am

    thank for your support

  • 29. Sanjay bharti  |  September 13th, 2012 at 8:53 am

    Its very useful site for student

  • 30. Prashant  |  August 28th, 2012 at 7:07 pm

    Thankyou

  • 31. kajal kumari sahu  |  August 18th, 2012 at 10:59 am

    p,d,f elements are very vast so please can you tell me how to cover this chapter in short term and important topics in this chapter

  • 32. pradeepa  |  April 9th, 2012 at 10:29 pm

    very useful, thanks a lot

  • 33. don  |  March 12th, 2012 at 11:29 am

    willlllll these questionz come

  • 34. Susmeet Jain  |  March 11th, 2012 at 9:50 am

    thank you so much!!

  • 35. Leher Malhotra  |  March 11th, 2012 at 8:33 am

    P-block is very vast. But we can filter out important (and expected) things using this post and prev. year papers.

    Thanks You so much, Team Meritnation!

  • 36. Mejo  |  March 10th, 2012 at 8:03 pm

    thank you so much this proves to be of great help

Comment

*
*
*
Some HTML allowed:
<a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <s> <strike> <strong>